Side connection for electrical cables.



5. C. STEARNS, 310E CONNECTION FOR ELECTRICAL CABLES. APPLICATION FILED JULY 22, 1915.

Pzztentd Apr. 18, 1916 U ITED sra'rns rarnnr FM.

JASON C. STEARNS. OF WORCESTER, MASSACHUSETTS.

SIDE CONNECTION FOR ELECTRICAL CABLES.

' Application filed July 22,

To all whom it may concern v Be it known that I, JAsoN C. STEARNs, a

.citizen of the United States, residing at Worcester, in'the county of Worcester and 7 State of Massachusetts, have invented a new and, useful Side Connection for Electrical Cables, of which the following is a specification.

This invention relates to a connector for electrical cables and also insulated wires,

' and while capable of general use where it is desired to take off a side connection, it is especially adapted for use on the electric lamps of automobiles.

The principal objects of the invention are to provide a simple and compact connector adapted to serve as a plug for insertion in a socket having bayonet slots and. to so arrange it that it will be formed of a single block of insulating material; to provide it with simple and convenient means whereby the ends of the wires or cable are held against the conductors which pass through the plug, and the armor or insulation is securely held in sockets in the insulator so that there is no danger of their'becoming loose or getting crossed in practice; to provide a construction whereby the means for holding the armor or insulation also constitutes a handle by which the plug can be manipulated; and to provide for securing the ends of the wires or cables in position in such a way that there is no danger of short- I circuiting the same by constant vibration or when applying a screw-driver to fasten or loosen them.-

Reference is to be had to the accompanyings in which, 7

#Figure' 1 is a side elevation of a preferred embodiment of the invention showing it in position on a socket and with an armored cable applied thereto; Fig. 2 is an end view of the same; Fig. 8 is a sectional view on or other tool the line 33 of Fig. 2, and Fig. 4 is a view similar to Fig. 3, showing a modification.

The invention is shown in a simple form in which it comprises a pluglO of hard rub ber of a general cylindrical form having a flat end surface and provided with radial pins 11 for entering the bayonet slots and a helical socket 12., This plug is preferably made of a-single molded body of hard rubber. In addition to the cylindrical plug -portion 10, it has an enlarged portion 13 at the other end having a knurled surface surrounding it and preferably ofsubstantially Specificatidn of Letters Patent.

Patented AIME-18, i916.

1915. Serial No. 41,417.

cylindrical form concentric with the plug l0. It also has a radial flat portion 14: having a material thickness and extending from the enlarged portion so that it constitutes a handle by which the whole device can be manipulated. These parts, except the pins 11, are formed of a single body of hard rubber, all integrally connected together in the molding operation.

Extending longitudinally, almost through the entire insulator, are two conductors 16 having flat ends flush with the flat end surface of the plug-10 and provided at their other ends, which are Within the enlarged portion of the insulator, with 10a 'tudinal c'entral screw-threaded openings 1 for re 'ceiving binding-screws 18. The whole rub" ber member is counter-bored atthis point to receive the heads of the screws so that in manipulating them with a screw-driver,

which has insulation thereon a similar condition exists.

In either case, although the binding screw I is ordinarily relied upon to hold the wire or cable, the armor or insulation fits within the enlarged passage so tightly that it is firmly held and does not move around and bend at a short angle, as has been the case heretofore. Consequently, the danger of breaking the wire or cable just at the end of the insulatioh is entirely avoided and at the point where the bending can occur it is so far distant from the end of the same that there is littledanger of its breaking.

In Fig. 4 I have shown a modification in which the exposed end of the connection is devoid of indentations and exposed metal parts. This is simpler, has a better appearance, and does not present any danger of short circuiting the battery. In this case the hard rubber plug is made in the same form as in the other figures, except that it' has no openings in its larger end. The

two passages 20 in alineinent thereto tions can be made therein by any person skilled in the art without departing from the scope of the invention as expressed in the claims. Therefore I do not wish to be limited to all the details of construction herein shown and described, but

What I do claim is v lflAs an article of manufacture, an electriealieonnector comprising a fiat-ended cylindrical molded insulator constituting a plug and having radial pins for entering bayonet slots, a conductor embedded therein flush at one end with the end surface of said plug and extending nearly but not quite to the other end, a binding screw extending longitudinally into one end of the conductor, the plug having a radial handle at the end provided with a perforation extending to the conductor for receiving an armor or insulation, said conductor having a passage for receiving a wire or cable in the armor or insulation, in position to be S8,.-

cured by said binding screw.

2. As an article of manufacture, an elec trical connector comprising a flat-ended cylindrical molded insulator constituting a plug, a conductor embedded therein andhaving its end substantially flush with the surface of the flat end of the plug and extending nearly but not .quite to the other end, a binding screw extending longitudinally into said other end of the conductor, the plug having a flat radial handle at the end provided with a perforation extending to the conductor for receiving an armor or insulation, said conductor having a passage for receiving a wire or cable in the armor or insiilation in position. to be secured by said binding screw.

3. As'an article of manufacture, an electrical'connector eomprising'a fiat-ended cylindrical molded insulator constituting a plug, having two. radial pins near one end to engage a bayonet socket, apair of conductors embedded therein and having their ends substantiall'yfiush with the surface of the flat end of the plug and extending nearly but not quite to the other end, two binding screws extending longitudinally into said other end of theconductor, the plug being countersunk to receive the heads of the screws and having a flat radial handle at the countersunk end provided with two perforations extending to the conductors for receiving an armor or insulation, said conduc tors having passages for receiving a wire or cable in the armor or insulation in position to be secured by said binding screws.

In testimony whereof I have hereunto set my hand.

JASON (l. STEARNS. 

